Pyrometer.



I J. E. WILSON.

PYROMETBB.

APPLICATION FILD SEPT. 7, 1912.

' Patented Dec. 10, 1912.

4 SHEETS-SHEET 1.

J. E. WILSON. PYROMETER. APPLIOATION FILED SEPT. 7, 1912.

Patented Dec. 10, 1912.

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APPLICATION FILED SEPT. v, 1912.

Patented D80. 10, 1912.

Envqhtoc MZz/sm 3 WWW J. E. WILSON. PYROMETEB.

APPLIOATION FILED SEPT. 7, 1912. I

Patented Dec. 10, 1912.

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efi msl km MM I ma 7 warren JAMES E. 'WILSON, OF NEW YORK, N. Y.

PYBOMETEB.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, JAMES E. WILSON, a

citizen ofthe United States, of New York, county of city State of New York,

residing in the New York, and

have invented certain new and useful Improvements in Pyrometers; and I doe-declare be a full, clear,'-'ajnd exact invention, such. as will 1 in the art to which it and use the same.

This invention relates pyrometers, and it has description of the enable others skilled appertains to make to the subject of particularly .in view a novel type of thermo-electric pyrometer can be readily applied to positively and internal temperature of and associated mechanism whereby the same to a rotary furnace accurately indicate the the said furnace;

The improved pyrometer as aforesaid is of rotary furnces type of furnace of speciailjut'ility in connection with the type that are used in annealing and in the the operation of the invention, but, of course,

it will be readily appreciated that the invention is not limited to the type of furnace shown.

Referring to the accompanying drawings wherein like characters of reference designate corresponding parts, Figure 1 1s a view in front elevation of a rotary furnace equipped with the improved pyrometer. Fig.

is a fragmentary plan view,

2 is a view in side elevation thereof. Fig. 3

showingthe manner of mounting the slip rings which form an important feature of the invention.

Fig. 4 is v 3-3, Fig. 4. Fig. 5 is a of the brushes and a sectional view taken on the line detail sectional view supports therefor which cooperate with the rings shown in Figs.-

3 and 4. Figs. 6 and 7 to Figs. 1 and 2, a modification of the invention. 1

sponding are views correbut illustratm The improved thermo-electric pyrometer has been shown in connection witha tionally the furnace being designated the numeral 1, and being shown convenfor the reason that the invention relates solely to pyrometers and is not at all dependent upon any particular typeof furnace. The furnace, as

shown, is of the internally fire'd'type, such as is used for hardening and annealing sm all .products.

the following to p f that Patented Dec.10,1912'. Application filed September 7, 1912. Serial No. 719,192.

The pyrometer includes in its general organizatlon a plurality of angular brackets 2 which, in the form of the invention shown in Figs. 1 and 2 of the accompanyin drawings, are fastened in regularly space radiating relation to the outer surface of the rotatable portion of the furnace 1, the angular type provide tions 2 the outwardly projecting flat por- WhlCh formsupports for the blocks of insulating material 3, said insulating materlal being preferably detachably fastened to the supporting portions 2 of the brackets 2 by the screws 4. Sliprings 5 surround 'and seat upon the insulating blocks 3, said rings being detachably fastened thereto by suitable means such as the bolts 6 and nuts 7. It will be observed by referring to Figs. 1, 2, and 3' of the accompanying drawings, that the brackets support the rings 5 in spaced radiating relation to the-furnace 1, and that said rings are also retained in spaced parallel relation upon'said brackets.

A bracket 8 is carried by the base, or foundation 9, of the furnace 1, said bracket projecting outwardly beyond the rings 5 and of brackets being preferred as they having a vertical arm 10 that parallels, in

spaced relation, said rings. The bracket 8 is so disposed nates adjacent the peripheries of rings 5, and from the upper end of said arm, a nonconducting rod 11 projects laterally. The rod 11 may be formed of vulcanized fiber or other material that is a nonconductor ofelectricity, and said rod overlaps, in spaced relation, a portion of the peripheries of rings 5. Sleeves 12 are mounted on the rod 11 in spaced relation. Each sleeve 12 has a shoulder 13' at one end, and atthe other end has an abutment band 14,the bands being held to the sleeves by the set screws-15, or other convenient fastening means, and such fasteners may also serve to lock the sleeves to the rod 11. Brush holders 16 are loosely mounted on the sleeves 12 and have the brushes 17 held therein by means of the set screws 18. The brushes project toward and their free ends contact with the peripheries of rings 5. Springs 19 are coiled about the sleeves 12, said springs having their ends connected to the bands 14 and the holders 17, and said springs obviously permit resilient movements of the holders 16 relative to the sleeves 12. i

A fire-resisting tube 20 extends within the that its vertical arm 10 termifurnace 1 andhas one end projecting beyond the exterior of said furnace. The projecting outer end of tube 20 is open, as indicated 27-28 with the brush-holders 17.

From the foregoing descri tion it will be understood that the rings 5 eing -in'circuit with the pyrometer and rotating with the furnace, the circuit is through said rings, brushes 17, circuit connections 27-28, and the galvanometer, and owing to the described arrangement of the, brushes relative to the rings 5, the said galvanometer is at all times in circuit wit-h the pyrometer, thereby causing a prompt and accurate. indicating of the temperature of the furnace.-

To assure an accurate reading of the temperature of a rotating furnace it is essential that the furnace must, at all times be in con-. stant electrical communication with the galvanometer, and in practice it has been found that the use of the sli rings 5 and the 00- operating stationary rushes 17 efiiciently serve 'as the circuit closing means; but it will be apparent that modifications as to structural arrangements and details of constructions may be resorted to in this respect. For instance, as suggested in Figs. 6 and 7 of-the accom anying drawings, a' sup orting frame may e carried-by the foundation 9 of the furnace, said frame being designated by the numeral 29 and having a vertical portion 30 that parallels, in spaced relation, of front of the furnace, said verticalportion being preferably in the form of an arch I and equiplped with lnwardly projecting lateral angu ar brackets 31 which rigidly support rings 32 in spaced relation, msulatmg locks 33 being interposed between the rings and brackets. In this form of the invention, the therm'o-couple has circuit connections 34-35 with brushes 36 carried by an lnsulated rod 37, the rod being carried by the furnace 1. Binding posts 38 carried by the stationary rin 32 have circuit connections 39-40 wit the galvanometer. As will be clear, the only vital difference between the latter form of the invention and the first-described form is that in the latter the rlngs are stationary and the brushes are movable, while in the first instance, the rings are movable and the brushes stationary.

ile two forms of the invention have been described in detail, it is to be understood that such are forms that havebeen found to be practical and eflicient and that the same eerve as examples of the practical working of the invention; but it is to be understood that the invention in its broad ently' insulated brushes in contact .while the other is aspect contemplates changes in details and structural arrangements, such as fall within the scope of the appended claims.

What I claim as my intention is:

1. The combination with a rotatable furnace, of a plurality of brackets carried thereby and arranged in radiating relation, slip rings carried by and retained in spaced relation to the furnace by said brackets,

means for insulating the rings from the brackets, a pyrometer carried by the furnace, circuitconnections between the yrometer and the rings, stationary brus es engaging the rings, a tem erature indicator, and circuit connections between the indicator and the brushes.

2. In. a rotary furnace, a thermo-eleetric pyrometer com risin sulated ring and brush with each other,

elements in contact independently in+ one of which is carried bythe revolving furnace while the other is sta- V t onary, means for spacing the furnace carrled element from the furnace, a thermocouple extending within the furnace and carried thereby, and connections between said couple and element carried by the furnace, a galvanometer, and connections between the element. 4

3. In a rotary furnace, a thermo-couple carried thereby, independently insulated rings carried by the furnace and supported in spaced relation to the same, independwith said rings, a stationary support for the brushes,

galvanometer andthe stationary 4. In a rotary furnace, a thermo-electric pyrometer comprising independently insulated contact and brush elements,.one of which is carried by the revolving furnace eter, means for retaining the furnace carried element in spaced relation the furnace, a thermo-couple extending within and a galvanometer, connections between said" rmgs and said couple, BJId OODHGCtIOHS between the brushes and galvanometer.

stationary, a galvanomfurnace and carried thereby, and connections between said cougte and element carried by the revolving mace and between said alvanometer and stationary element.

5. he combination with a rotatable furnace, a thermo-couple carried thereby, slip rings retained in spaced relation to the furnaoe, circuit connections between the rings and the couple, a stationary support, brushes carried thereby and engaging the rlngsima galvanometer, and circuit connections tween the galvanometer and the brushes.

6. In a rotary furnace a thermo-electrlc pyrometer. comprising independently 1nsulated contact surfaces carried by and supported in spaced relation to said furnace, mdependent with said contact surfaces and supported by a stationary element, a galvanometer, and

y insulated brushes in contact circuit connections between the brushes and the galvanometer.

7. In a rotary furnace, said furnace having a thermo-couple, a plurality of angular brackets carried by the furnace and providing outwardly projecting supports, said brackets being arranged in radiating relation, insulating blocks carried by each support, slip rings arranged in spaced parallel relation and seated on said insulating blocks,

said rings being retained in spaced relation to the furnace by the supports, circuit connections between the rings and the couple, a stationary support, brushes carried thereby and engaging the rings, a galvanometer,

and circuit connections between the brushes and galvanometer.

8. In a rotary furnace, a thermo-electric pyrometer carried thereby, contact surfaces carried by the furnace and in circuit with the pyrometer, a stationary support provided with a vertical extension that overlaps the cont-act surfaces in spaced relation, brushes carried by extension of the support and engaging the contact surfaces, a galvanometer, and circuit connections between the brushes and the galvanometer.

In testimony whereof I afiix my signature in presence of two witnesses.

JAMES E. WILSON.

Witnesses:

HUGH B. REED, JOHN O. MULLER. 

